Temperature-dependent Variations of the Interface between UO2 and Zr

被引：5

作者：

Youn, Young-Sang ^{[1
]}

Kim, Jong-Goo ^{[1
]}

Dal Park, Soon ^{[1
]}

Ha, Yeong-Keong ^{[1
]}

机构：

[1] Korea Atom Energy Res Inst, Nucl Chem Res Div, Taejon 34057, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2015年 / 36卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Uranium dioxide; Zirconium; High temperature; X-ray photoelectron spectroscopy; CHEMICAL INTERACTION; ROOM-TEMPERATURE; XPS; ZIRCONIUM; OXIDATION; DEGRADATION; DISSOLUTION; ZIRCALOY-4; ACCIDENT; OXIDES;

D O I：

10.1002/bkcs.10403

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Temperature-dependent variations of the interface between uranium dioxide and zirconium in UO2 -Zr systems were studied using X-ray photoelectron spectroscopy. The surface of the uranium dioxide sample was oxidized to hyperstoichiometric UO (2+x) composed of U(IV), U(V), and U(VI) valence states at room temperature, whereas UO2 consisting of the only U(IV) oxidation state appeared after annealing with zirconium. In the zirconium sample, its surface was spontaneously oxidized to ZrO2 at room temperature, whereas it was variously changed after heating the UO2 -Zr sample. Furthermore, we observed a molten product composed of -Zr(O), (U,Zr)O-2 , and ZrO2 when a UO2 -Zr sample was fully melted.

引用

页码：2068 / 2072

页数：5

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